Speech Technology Gnome-2M User Manual

Pocket stereo digital voice recorder gnome-2m

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Pocket Stereo Digital Voice Recorder
Gnome-2M
c
User Guide
Speech Technology Center
Russia

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Summary of Contents for Speech Technology Gnome-2M

  • Page 1 Pocket Stereo Digital Voice Recorder Gnome-2M User Guide Speech Technology Center Russia...
  • Page 3 Disclaimer Speech Technology Center accepts no liability whatsoever for any loss or injury incurred by the owner or by any third party while using this product and its User Manual and specifically disclaims any warranties, merchantability or fitness for any particular purpose.
  • Page 4 Dear Customer, Thank you for purchasing this product! For optimum performance and safety please read these instructions carefully.
  • Page 5: Table Of Contents

    Memory cards ........18 7 Gnome-2M...
  • Page 6 Playback of sound recordings ......26 7.4.1 Playing sound recordings through Gnome-2M ....26 7.4.2...
  • Page 7: Introduction

    Chapter 1 Introduction The STC-H203 pocket stereo digital voice recorder (hereafter – Gnome-2M ) is a professional sound recording unit. It is designed to be used for on-line (spontaneous, non-prepared) recording of speech signals in poor acoustic conditions, indoors and outdoors, using built-in or external micro- phones.
  • Page 8: Delivery Set

    Chapter 2 Delivery set Nomenclature Device Name Note Digital Voice Recorder STC-H203 Gnome-2M Memory card Compact Flash I 512 Mb (up to 2GB by request) 220V/50Hz power supply adapter — LR03 AAA battery — 2 pcs. Telephone adapter — External microphones set —...
  • Page 9: Specification

    Chapter 3 Specification Sampling rates 6, 8, 10, 16, 32, 48 kHz Record format PCM 16 bit Compression type -law, A-law THD (in direct channel at 1 kHz) not worse than 0.04% SNR (in direct channel at 1 kHz) not worse than 72 dB Dynamic range (with respect to Gain Control) 90 dB Type...
  • Page 10: Overview

    Noise-cancellation features are now available during recording playback (for sound recordings made at a sampling rate of 8, 10 and 16 kHz). Gnome-2M includes broadband and composite (i.e. broadband & inverse) filters. Suppression depth for both filters is adjustable within the 0-30 dB range with a 6 dB step.
  • Page 11: Protection

    Moreover, Gnome-2M ’s operating parameters are registered for every recording session. This makes it impossible to interfere with the recorded data using Gnome-2M . Acoustic signals recorded at 6, 8 or 10 kHz can be masked to prevent recorded data from playing on any other playback device (including those similar to Gnome-2M ).
  • Page 12: Device Operation

    Chapter 6 Device operation 6.1 Control panel and commutation sockets Gnome-2M size is 115 55 15 mm. Its control panel and commutation sockets are shown in Fig. 6.1. Figure 6.1: Voice recorder connectors and controls Pos. Marking on the box...
  • Page 13: Keyboard

    The film coated tactile keyboard is durable and resistant to abrasion and other external influence. Every key has several different functions listed in Table 6.1. Table 6.1: Keyboard functions Function - Switch Gnome-2M on/off - Selected highlighted menu item - Save or enter parameter value (PIN-code, record preferences) - Select playback parameter to be adjusted (Volume —...
  • Page 14: Lcd Panel

    CHAPTER 6. DEVICE OPERATION 6.3 LCD panel Gnome-2M LCD panel is shown in Fig. 6.1. It consists of an operating area (97 32 dots) and a string of digits and mnemonic symbols located at the bottom of the screen. By default, the screen operating area (it is marked by a dotted line in Fig.
  • Page 15 6.3. LCD PANEL Table 6.2: continued Graphic Symbol Function No CF card inserted Insert a card Memory card is damaged or its format is wrong Bad format Maximum recording time (hh:mm) for current voice recorder settings 00:00:00 and memory card free space High or Low audio record quality and signal sampling rate (06.
  • Page 16: Microphones

    6.4 Microphones External microphones’ set (see Fig. 6.3) includes two microphones (2), a voice recorder re- mote control unit (5) with a headphones connection jack (6) and is plugged in Gnome-2M with a multiple-contact plug (1). The left and right microphone cables are marked (3). The right channel microphone wire has a darker marking.
  • Page 17: Connecting The Headphones

    6.6. CONNECTING THE HEADPHONES Figure 6.4: PC connection cable 6.6 Connecting the headphones Headphones can be connected to the voice recorder either using the headphone jack provided on the remote control unit (Fig. 6.3, 6) or with a headphones adaptor included in the delivery set ( Fig. 6.5) and connectable directly to the voice recorder (Fig.
  • Page 18: External Power Supply

    CHAPTER 6. DEVICE OPERATION Figure 6.6: Power supply module with batteries 6.7.2 External power supply The power supply adapter is usually used in steady-state conditions, e.g. during joint operation of the voice recorder and PC or for playing sound recordings. Power supply is plugged in the respective voice recorder connection jack (Fig.
  • Page 19 6.8. MEMORY CARDS Figure 6.7: Setting CF memory card To safely remove the memory card from your PC or from the voice recorder when it is PC-connected use the ”Safely Remove Hardware” function accessible after right-clicking on the respective sign in the system tray (at the bottom right of the screen).
  • Page 20: Gnome-2M Operation

    Chapter 7 Gnome-2M operation 7.1 Gnome-2M operational states Gnome-2M has four operational states: storage and transportation standby enabled recording We recommend that you store and transport the voice recorder in a standard package, without power supply batteries and memory card CF.
  • Page 21: Preparing Gnome-2M For Recording

    7.2. PREPARING GNOME-2M FOR RECORDING Figure 7.1: LCD panel (operating area) when Gnome-2M is switched on for the first time 7.2 Preparing Gnome-2M for recording Quick preparation Install the power supply batteries (or plug in the network adapter) and the memory card for quick recording.
  • Page 22: Setting Up And Controlling Operating Parameters

    CHAPTER 7. GNOME-2M OPERATION If a PIN-code was set (Section 8), you will be requested to enter it as you switch Gnome-2M on. The LCD panel after the first Gnome-2M activation is shown in Fig. 7.1. Functions of the graphic symbols and terms are listed in Table 6.2. If the inappropriate memory card format message ”BAD FORMAT”...
  • Page 23: Sound Recording Time

    7.2. PREPARING GNOME-2M FOR RECORDING Figure 7.3: LCD panel view after operating parameters have been modified 7.2.4 Sound recording time Chosen sound recording parameters and free memory space directly determine the maximum recording time indicated on the screen. Approximate record duration for different recording modes and CF cards is listed in Table 7.1.
  • Page 24: Gain Level Control

    After connecting microphones do not forget to set the microphone switch to ”EXT” (Fig. 6.1). 7.2.7 Setting and changing PIN-Code and masking algorithm To limit access to Gnome-2M general parameters and stored data, PIN-code and masking may be activated. It is done via the Sound Manager software as described in section 8.
  • Page 25: Manually Switching Sound Recording On/Off

    7.3.3 Voice activation mode (VA ) To record sound using voice activation (VA) you should enable this mode (see Section 7) and define the start/stop recording threshold. If you use VA, Gnome-2M will only record signals ex- ceeding the defined threshold level. This threshold is displayed as a black arrow ( ) To set the threshold in the “VA”...
  • Page 26: Timers' Mode

    7.4.1 Playing sound recordings through Gnome-2M To play recordings stored on the CF memory card via the voice-recorder, plug headphones in the respective jack on the microphone or headphones adaptor cable, connect the cable to Gnome-2M and press the key. You will have to enter the PIN-code (if set). Then you will see a list of audio recordings stored on the CF card.
  • Page 27: Controlling Playback Volume, Noise Suppression And Playback Speed

    To start playback press . You will see the playback level indicator bar, playback time counter and playback status symbols (see Table 6.1). You can control playback and invoke Gnome-2M features (loop playback, speech signal search, playback level adjustment and noise-cancellation) by pressing respective keys as described in Table 6.1.
  • Page 28: Gnome-2M Software

    (instead of a common Sound Blaster), you will have to install its drivers. These drivers are to be found on the “Sound Manager” CD. Just follow the software installation wizard instructions. After the drivers are installed, you can select Gnome-2M as your sound recording ans playback device on the control panel.
  • Page 29: Sound Manager Application

    Delete selected Delete selected sound files File Exit Exit Sound Manager Toolbar Show/hide toolbar View Status bar Show/hide status bar Connect Connect Gnome-2M to PC Recorder Change PIN Change or remove PIN-code Change Key Change or remove signal masking algorithm...
  • Page 30: Setting And Changing Pin-Code And Masking Algorithm

    After you enter your PIN-Code and press “OK” all the signals recorded at 6, 8 and 10 kHz will be masked. Masked recordings may be played only by Gnome-2M , which was used to record it or by Sound Manager (only after the recordings are unmasked).
  • Page 31: Upgrading The Software

    8.4. UPGRADING THE SOFTWARE Playback Double-click on any audio recording in the operating area to play it. Sound Manager will auto- matically load it into an application used for playing wav files in your system. Copying to the hard drive To copy recordings to the hard drive just move the selected recordings with the mouse to the desired folder.
  • Page 32: Transportation And Service

    Chapter 9 Transportation and service 9.1 Operating conditions – Temperature: from -5 to + – Relative humidity (non-condensing): less than 95% at + 9.2 Transportation and storage Transportation is carried out by all transport vehicles and at the temperature between -50 and + C with protection from excessive vibration.
  • Page 33: Registration Certificate

    Chapter 10 Registration certificate Tested and approved The pocket stereo digital voice recorder Gnome-2M , serial number conforms to tech- nical requirements and is declared suitable for use. Adjustment conducted by Date of issue Warranty The manufacturer guarantees that the issued devices conform to the technical requirements, whereby the user observes the conditions and regulations of operation, storage and transport, for a period of 24 months from the date of sale.
  • Page 34 03-160306...

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